Top definition
A girl you relate to as if she's your girlfriend but you aren't having sex with. Can be a friend's girlfriend, a close friend, a roommate, etc. Often results in sex. Sometimes you deny each other sex since its immoral or taboo (c.f. friend's girlfriend "no sex girlfriend"). Other times it's just because one of you isn't into the other or it's mutually platonic but just kind of creepy how much you act like you're banging. Can be abbreviated using the acronym NSGF.
"Man, you should really watch out with her, you guys are acting like boyfriend and girlfriend"
"I know, she's my 'no sex girlfriend', wish we were doing it."
by secretuser420 February 21, 2018
Get the mug
Get a No Sex Girlfriend mug for your buddy Callisto.